TS Optics apochromatic Barlow Lens 5x - 1.25 inch

TS Optics apochromatic Barlow Lens 5x - 1.25 inch



For high magnifications, like for observing moon and planets, you need to use short focal length eyepieces. These are often either very expensive or have a very narrow eye relief, making them rather uncomfortable to use.



For astro-imaging with large magnifications you can do eyepiece projection, but this offers only a limited sharpness throughout the photographic field.



The TS Optics APO Barlow lens is the ideal alternative for both applications.


Fields of use



The large magnification factor 5x turns for example a 25 mm Plossl eyepiece into a 5 mm eyepiece, while retaining the comfortable eye relief of the longer eyepiece. This is very comfortable for observing planets.



For high magnification astro-imaging, like for webcam imaging of the planets, you could use eyepiece projection photography. The better alternative is the 5x Barlow lens because it offers a better field sharpness than typical eyepiece projections. Experience shows that for planetary imaging an effective focal ratio of f/25-f/30 is ideal. As a result this Barlow is the perfect match for most Newtonian telescopes.


The Lens Element



The three-element Barlow lens is fully multi-coated for a bright and high contrast image.


Delivery contents

• 
  5x Apo Barlow Lens, 1.25"
• 
  plastic dustcaps on both sides

Short, apochromatic Barlow lens as an alternative to the use of eyepieces with short focal length for reaching high magnifications.